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• Postfix Send Error: Must Issue STARTTLS command

  - by Mary Elizabeth

  Running Ubuntu 12.04 and trying to configure postfix to relay send and receive through GMAIL. Am running into connection issues particularly with TLS. Have tried a bunch of troubleshooting solutions and have changed my main.cf to address TLS but still receive the below errors. Tried debugging connection issues with: `root@mailservice:/etc/postfix# openssl s_client -connect localhost:587 -starttls smtp` and I recveive these errors `connect: Connection refused' 'connect:errno=111` in my logs I see: Jun 11 13:54:31 mailservice postfix/smtp[3765]: warning: cannot get RSA certificate from file /etc/postfix/cert.pem: disabling TLS support Jun 11 13:54:31 mailservice postfix/smtp[3765]: warning: TLS library problem: 3765:error:0906D06C:PEM routines:PEM_read_bio:no start line:pem_lib.c:696:Expecting: TRUSTED CERTIFICATE: Jun 11 13:54:31 mailservice postfix/smtp[3765]: warning: TLS library problem: 3765:error:140DC009:SSL routines:SSL_CTX_use_certificate_chain_file:PEM lib:ssl_rsa.c:729: Jun 11 13:54:31 mailservice postfix/smtp[3765]: 9986B6846A: to= <[email protected]>, relay=smtp.gmail.com[173.194.77.109]:587, delay=0.15, delays=0.02/0.02/0.09/0.02, dsn=5.7.0, status=bounced (host smtp.gmail.com[173.194.77.109] said: 530 5.7.0 Must issue a STARTTLS command first. hd9sm12170509obc.6 (in reply to MAIL FROM command)) The contents of my main.cf (pertaining to TLS) look like this: #TLS Parameters smtpd_tls_cert_file = /etc/ssl/certs/ssl-cert-snakeoil.pem smtpd_tls_key_file = /etc/ssl/private/ssl-cert-snakeoil.key smtpd_tls_session_cache_database = btree:${data_directory}/smtpd_scache smtp_tls_session_cache_database = btree:${data_directory}/smtp_scache #TLS Settings smtp_use_tls = yes smtp_tls_security_level = may smtp_tls_loglevel = 1 smtp_enforce_tls = yes smtp_tls_CAfile = /etc/postfix/cacert.pem smtp_tls_cert_file = /etc/postfix/cert.pem smtp_tls_key_file = $smtp_tls_cert_file smtp_tls_session_cache_dataabase = btree:/var/run/smtp_tls_session_cache smtp_tls_note_starttls_offer = yes smtpd_use_tls = yes smtpd_tls_security)level = may smtpd_tls_auth_only = no smtpd_tls_CAfile = /etc/postfix/cacert.pem smtpd_tls_cert_file = /etc/postfix/cert.pem smtpd_tls_key_file = /etc/postfix/key.pem smtpd_tls_received_header = yes smtpd_tls_session_cache_database = btree:/var/run/smtpd_tls_session_cache smtpd_tls_session_cache_timeout = 3600s tls_random_source = dev:/dev/urandom As far as I can tell everything is in order for a proper TLS Connection, and I am unsure what would need to change in main.cf or elsewhere for mail to send.

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• Vboxheadless without a command prompt (VirtualBox)

  - by joe

  I'm trying to run VirtualBox VM's in the background from a service. I'm having trouble starting a process the way I desire. I'd like to start the virtualbox guest in headless mode as a separate process and show nothing as far as GUI. Here's what I've tried: From command line: start vboxheadless -s "Ubuntu Server" In C#: ProcessStartInfo info = new ProcessStartInfo { UseShellExecute = false, RedirectStandardOutput = true, ErrorDialog = false, WindowStyle = ProcessWindowStyle.Hidden, CreateNoWindow = true, FileName = "C:/program files/sun/virtualbox/vboxheadless", Arguments = "-s \"Ubuntu Server\"" }; Process p = new Process(); p.StartInfo = info; p.Start(); String output = p.StandardOutput.ReadToEnd(); //BLOCKS! (output stream isnt closed) I want to be able to get the output to know if starting the server was a success. However, it seems as though the window that's spawned never closes its output stream. It's also worth mentioning that I've tried using vboxmanage startvm "Ubuntu Server" --type=vrdp. I can determine whether the server started properly using this. But it shows a new command prompt window for the newly started VirtualBox guest.

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• PBS batch jobs - the qalter command

  - by Ryan Budney

  I've got a giant computation running on a Scientific Linux cluster. At present I have over 600 jobs parked in the queue, waiting for processor time, while a few are running. I'm trying to use the qalter command on some of the idle but scheduled jobs. I'd like to schedule them for a later time, so that other users can jump part of the queue, sort of as an act of politeness. Is this doable? For example, JOBNAME 292399 is currently idle, scheduled to be run whenever a spot in the queue opens up. But if I run qalter -a 10051000 292398 followed by qrerun 292398 I get qrerun: Request invalid for state of job 292398.euler. From the qalter documentation, I thought 10051000 refers to tomorrow (oct 5th, 10am) but perhaps I'm misunderstanding something? If I'm going about this the wrong way, please let me know. The main thing I'm looking for is a command that's easily scriptable, so that I can modify when my queued tasks get run. qalter seems good for those purposes if I can get it working. I'd rather avoid running qdel and re qsubbing the computations, as there's a bookkeeping issue on which tasks to restart (vs which ones not to). I want to avoid that kind of bookkeeping. From googling around I notice some qalter commands have rather different date formats, but the above appears to be correct, as far as I can tell from the man docs. Any help would be appreciated.

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• how to use updatedb command as an ordinary user on linux?

  - by hugemeow

  locate command is very useful tool on linux, but it seems only root can run updatedb command, so it will be very unconvinent to use locate command on linux, so how to make ordinary user to have the priviledge to run updatedb command? updatedb is the command use to update the db used by locate command:) error message when try to run updatedb using ordinary user: [mirror@home code]$ updatedb updatedb: can not open a temporary file for `/var/lib/mlocate/mlocate.db'

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• exim configuration: 503 AUTH command used when not advertised

  - by jrdioko

  I'm running a piece of software on a Windows server that sends email notifications via a remote SMTP server. It has very few configuration options, and only supports basic SMTP authentication without SSL/TLS. I have exim4 running on a Debian server that will be the SMTP server for this Windows program. It is set up with default configuration, plus allowing AUTH PLAIN and AUTH LOGIN unencrypted connections. I have successfully sent an email over telnet: telnet servername 25 ehlo test 250-AUTH PLAIN LOGIN ... auth plain XXX 235 Authentication succeeded mail from: ... ... However, the program I want to connect to this server fails to connect. To see why, I ran a packet sniffer during the connection, and see the following session: C: HELO hostname S: 250 Hello hostname C: AUTH LOGIN XXX | XXX S: 503 AUTH command used when not advertised | 500 unrecognized command C: QUIT S: 221 closing connection I'm not familiar enough with the SMTP protocol to understand what's going on here. What do I need to change on my exim4 SMTP server to allow for this connection to be made?

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• Ubuntu : apt-get command error

  - by Wibowo Margito

  I work with Ubuntu 10.04 everyday. Several days ago, when I release command sudo apt-get install .... it run very good, no error. I also able to open websites with my browser with no proxy. But, today, I got error. Every time I release the command, the connection redirected to an IP in my local network. I can see it in the terminal window. Several days ago I tried to connect to the internet throught the IP, by SSH tunneling. But I forget what I have done and there is no way home. This is the output in terminal : deo@deo-laptop:~$ sudo apt-get update [sudo] password for deo: Err http://cx.archive.ubuntu.com lucid Release.gpg [ Could not connect to 10.7.7.15:3128 (10.7.7.15). - connect (110: Connection timed out) Err http://cx.archive.ubuntu.com/ubuntu/ lucid/main Translation-en_US Unable to connect to 10.7.7.15:3128: 10.7.7.15 is an adress in my local network. Somebody please help me :)

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• Bash - how can i pass variable to command and read its output

  - by Skuja

  In my bash script i want to execute command that will find lines in a file that starts with a keyword which is stored in a variable like this: keyword="key" result=(`cat path/to/my/file | grep '^$keyword'`)

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• Running scripts from another directory

  - by Desmond Hume

  Quite often, the script I want to execute is not located in my current working directory and I don't really want to leave it. Is it a good practice to run scripts (BASH, Perl etc.) from another directory? Will they usually find all the stuff they need to run properly? If so, what is the best way to run a "distant" script? Is it . /path/to/script or sh /path/to/script and how to use sudo in such cases? This, for example, doesn't work: sudo . /path/to/script

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• Run command remotely on Windows computer

  - by Bilal Aslam

  I have a Windows Server 2008 instance on Amazon EC2 (Amazon's cloud compute platform, which provides VMs in the cloud). It has an external IP, and I have an admin account on the box. I would like to 'bootstrap' this instance remotely i.e. I want to run commands to download, install and configure apps on it, all without having to log on even once. Also, I cannot use psexec on the source computer. I have figured out how to do this to a remote, domain-joined computer using WMI. However, I have NOT been able to do for a remote computer on EC2. Here are some specific restrictions: The remote computer is not part of my domain, hence no Kerberos The remote computer does not have a cert I trust, or vice versa I am sure I am running into to some auth/trust restriction. Is there any way I can run a single command on the remote, given that I have admin privileges? I'm not tied down to using WMI, but I do need to run a command somehow. Feels like this should be a solved problem.

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• GnuPG Command Line - Verifying KeePass Signature

  - by Stisfa

  I'm trying to verify the PGP Signature of the latest version of KeePass 2.14's setup file against this signature, but this is the output I receive: C:\Program Files (x86)\GNU\GnuPG>gpg.exe --verify C:\Users\User\Desktop\KeePass-2.14-Setup.exe gpg: no valid OpenPGP data found. gpg: the signature could not be verified. Please remember that the signature file (.sig or .asc) should be the first file given on the command line. C:\Program Files (x86)\GNU\GnuPG> I found this command here, but it made no mention about ".sig" or ".asc" files, so I figured I did something wrong. By reading (http://www.gnupg.org/documentation/manuals/gnupg/gpgv.html#gpgv), I further tried the following: C:\Program Files (x86)\GNU\GnuPG>gpg.exe --pgpfile C:\Users\User\Desktop\KeePass-2.14-Setup.exe gpg: Invalid option "--pgpfile" C:\Program Files (x86)\GNU\GnuPG> As you can see, the results are quite obfuscating... I took a look at this on SuperUser (http://superuser.com/questions/16160/short-easy-to-understand-explanation-of-gpg-pgp-for-nontechnical-people - I couldn't use "a href" due to the built in spam filter that discriminates against users with < 10 rep; this is the same reason for the link above this link), but none of the links seemed to really address my question, at least not directly enough for me to get any idea on how to move forward on this. Can anybody here help me with the esoteric technicality of OpenPGP & the associated use of the GnuPG program? I've felt pretty dumb learning VBS, but this is beyond humiliating: it's absolutely debilitating and maiming whatever confidence I had with my IT skills (then again, I have no justification for making any boast either, as I have yet to get my A+ Cert, lol).

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• Giving PHP the permission to make a git pull request

  - by Bernd

  Hello, I would like to allow PHP to execute a Git pull command. But there are some problems with the user and permissions. How did you solve the problem? PHP runs as user www-data. Therefore I've changed the .git directory owner/group to www-data (chown www-data:www-data -R .git). As it is turned out later www-data has no SSH keys. Is it a good idea to give it one? If yes where to place? Or is it possible to allow it to use a specific key. Best regards, Bernd

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• Start screen with bash command

  - by Jeje

  I need to start screen with some bash command to execute. Trying screen -S test -d -m bash -c './test.php' but have no result, screen didn't apear. Even more, let's that i need to start something like that vlc -I ncurses --http-reconnect http://ip/ --sout '#duplicate{dst=std{access=http{user=,pwd=},mux=ts,dst=:51001}}' --ttl=255 --loop --repeat

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• Run command remotely on Windows computer from C#

  - by Bilal Aslam

  I have a Windows Server 2008 instance on Amazon EC2 (Amazon's cloud compute platform, which provides VMs in the cloud). It has an external IP, and I have an admin account on the box. I would like to 'bootstrap' this instance remotely i.e. I want to run commands to download, install and configure apps on it, all without having to log on even once. Also, I cannot use psexec on the source computer. I have figured out how to do this to a remote, domain-joined computer using WMI. However, I have NOT been able to do for a remote computer on EC2. Here are some specific restrictions: 1) The remote computer is not part of my domain, hence no Kerberos 2) The remote computer does not have a cert I trust, or vice versa I am sure I am running into to some auth/trust restriction. Is there any way I can run a single command on the remote, given that I have admin privileges? I'm not tied down to using WMI, but I do need to run a command somehow. Feels like this should be a solved problem.

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• Windows Vista - Can Boot into Safe Mode Command Prompt, Cannot Access Flash Drive

  - by Adam

  Hey there, Got a laptop dropped into my lap. Has Vista installed. Normal boot never gets past the login screen. Safe mode will get past, but just barely. I can try and start the task manager at that point, but it never opens. Only reliable way to do anything I've got is the safe mode command prompt... Boots up and logs in fine. I can't see anything noticably wrong via regedit, but it's been a long time since I've had to fix up a Windows box... not sure that I would. Problem I'm having, is that I want to run ComboFix/etc, but have no way to get them on there... When I pop a flash drive in, it seems to mount it (flash drive flickers as normal) but it never seems to be mounted... I cannot access it through any drive letter on the command line. I managed to start the device manager (devmgmt.msc) and the flash drive was recognized and listed... Any ideas on how to get this thing going again? (Short of a reinstall.) (It has no CD drive, either, so burning files to CD would not be easy...) Thanks! Adam

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• Giving PHP the permission to make a git pull request

  - by Bernd

  I would like to allow PHP to execute a Git pull command. But there are some problems with the user and permissions. How did you solve the problem? PHP runs as user www-data. Therefore I've changed the .git directory owner/group to www-data (chown www-data:www-data -R .git). As it is turned out later www-data has no SSH keys. Is it a good idea to give it one? If yes where to place? Or is it possible to allow it to use a specific key. Best regards, Bernd

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• trap "" HUP v.s Nohup ? How can I run a portion of shell script in nohub mode?

  - by Alex

  I want to run a shell script over the weekend, but I wanna make sure if the terminal loses the connection, my script won't be terminated. I use nohup for the whole script invokation, but I also want to execute some portion of my shell script in a way that if someone closes my terminal, my script runs on the background still. Here is a simple example : #!/bin/bash echo "Start the trap" trap " " HUP echo "Sleeping for 60 Seconds" sleep 60 echo "I just woke up!" Please suggest what I should do ? The trap " " HUP seems like not working when I close my terminal tab.

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• Ubuntu 10.04 LTS - jobs command not working

  - by Tom Schuermans

  When I used to execute the jobs command I got a list of running processes with their respective process-ID, but in Ubuntu lucid lynx this doesn't seem to be working. Anyone have a solution?

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• On AWS EC2, Unable to run sudo command after modifying permissions to /usr folder

  - by Kayote

  All, We have searched quite a bit and a few of 'Eliah Kagan's' posts are great about getting access back to sudo. However, our server is on AWS EC2 & I am a complete newbie to this. We are trying to setup Cronjobs for backing up our server data. What we did: Using Putty, we created a script file: usr/share/site-db-backup/backupToS3.php, however, Ubuntu was not saving the changes we made as it reported we did not have permission as user 'Ubuntu'. Error details are: "Upload of file backupToS3.php was successful but error occurred while setting the permission &/ or timestamp. If the problem persists, turn on 'ignore permission errors' option. Permission denied. Error code: 3 Request code 9" So, we ran the command "sudo chmod -R a+rwx /usr" for granting permission to the folder 'usr'. However, now whatever sudo command is run, we get the error: "/usr/lib/sudo/sudoers.so must be only be writable by owner. fatal error, unable to load plugins." We are complete newbies to Ubuntu & EC2 so do need step by step guidance of how to get sudo back & successfully write to the Crontab script sitting in 'usr/' folder.

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• Command line scripts to restore the 4 system databases of MS SQL Server 2008

  - by ciscokid

  Hi there, can someone give me some advice on how to restore the 4 system databases (master, msdb, model, tempdb) of a sql server 2008 please? I've already done some testing myself (on restoring the master database) with the following commad line script as a result: ::set variables set dbname=master set dbdirectory=C:\Program Files\Microsoft SQL Server\MSSQL10.MSSQLSERVER\MSSQL\DATA title Restoring %dbname% database net stop mssqlserver cd C:\Program Files\Microsoft SQL Server\MSSQL10.MSSQLSERVER\MSSQL\Binn sqlservr -m sqlcmd -Slocalhost -E -Q "restore database master from disk='c:\master.bak' WITH REPLACE" net start mssqlserver pause After the execution of the 'sqlservr -m' command (used to start the server instance in single-user mode, which is only necessary when restoring the MASTER database), the script stops. So in order to execute the last 2 commands I need to separate the script into 2 smaller scripts, and run them one after the other. Does anyone has an idea on how I can merge them into one single script that runs completely without any interruption? I also want to restore the other 3 system databases using command line scripts like this one. Can someone please advice me how I need to go on? I've already noticed that restoring the temdb is not so easy, but there has to be a way... Looking forward to your advice!

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• Setting cfengine3 class based on command output

  - by gnomie

  This question is very similar to How can I use the output of a command in cfengine3 but the answer does not apply in my case I believe. I want to update a git repository via "git pull" and based on whether that lead to changes trigger some follow up action. Simplified, if there was something like "match output and set class" via some body if_output_matches I would want to use something like this: bundle agent updateRepo { commands: "/usr/bin/git pull" contain => setuidgiddir_sh("$(globals.user)","$(globals.group)","$(target)"), classes => if_output_matches("Already up-to-date.","no_update"); reports: no_update:: "nothing updated"; } body contain setuidgiddir_sh(owner,group,folder) { exec_owner => "$(owner)"; exec_group => "$(group)"; useshell => "true"; chdir => "$(folder)"; } So, is it possible to use the output of a - possibly expensive command - and base some decision on that? The execresult function is no good choice for me as a) the pull may become expensive at times (not recommended following the cfengine3 reference) and b) does not allow to specify user, group, working dir - which is important in my case. The repository is in user space and not owned by root.

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• "sh: /usr/sbin/xenstored: not found" - But it's there?

  - by Matt H

  What would cause running the file /usr/sbin/xenstored to print sh: /usr/sbin/xenstored: not found However, the file /usr/sbin/xenstored is there and is not a symbolic link. Actually I should be running this as root. That prints a similarly odd message. sudo: unable to execute /usr/sbin/xenstored: No such file or directory By the way, xenstored is not a script, it's an ELF executable. My guess is that it's because I haven't gotten all the dependent libraries installed. However, I would expect it to say something like this: ./xenstored: error while loading shared libraries: libxenctrl.so.4.0: cannot open shared object file: No such file or directory Which is true of running xenstored on a system that doesn't have all the required libraries. Why do I get "not found" vs the much more useful "cannot open shared object file"?

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• Scripted printer configuration changes

  - by David Steven

  I've got about a dozen Windows XP machines that I need to make a couple specific printer configuration changes to. The printer is "virtual" printer for an electronic delivery service. I'd like to not have to visit each machine individually. I already have the means to execute commands remotely on the machines, I just can't seem to find away to adjust these settings via command line or script. Specifically I need to be able to make the following changes: 1) As an admin user: - Device Settings - Font Substitution Table/Courier New - Change to "Courier" 2) As a specific* user: - Printer Preferences - Paper/Quality - Advanced - Change Graphic/Print Quality to "600 x 600" - Change Document Options/Printer Features/Graphics Mode to "HP-GL/2" *This change is a per user configuration, unless there's some way to make it once. In this situation I only really need it for a specific (different) user on each machine.

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• Start jade via batch script as service on windows server 2012 amazon ec2 instance

  - by E. Lüders

  I would like to start the Jade agent platform with a batch script on an windows server ec2 instance as a service. The reason for this is, that I want to start jade automatically at system startup. For creating the service I use nssm. However so far its working fine and the service is created. When I want to start the service I get an error message: Windows could not start the NAME service on Local Computer. The service did not return an error... My batch file contains only one line: java jade.Boot -platform-id P%random% If i execute the script via cmd it works fine. Anybody got an idea why this is not working if I start the batch script as a service?

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• /data/tmp on database server?

  - by Mellon

  I am on a Linux ubuntu machine with MySQL installed. My teacher gave out an assignment which mentioned "copy cars.dat to /data/tmp on the MySQL database server" without any explanations, I do not know what is the "/data/tmp on database server" means exactly? Basically after that I need to execute SQL statement like LOAD DATA INFILE '/data/tmp/cars.dat' INTO TABLE cars So, what does copy cars.dat to /data/tmp on the database server means as there is no /data/tmp directory even? Personally, I checked /etc/mysql/my.cnf file, inside which there are definitions of : ... basedir = /usr datadir = /var/lib/mysql tmpdir = /tmp ... Does it mean to copy cars.dat to the tmpdir which is just /tmp under root directory??

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• MySQL command appends '@localhost' to username

  - by Mikee

  I just can't seem to figure this one out. I want to use the command line to connect to a MySQL database residing on another server. I went ahead and created the username and password for the user. I have also granted all privileges on that user for that database. When using the command: mysql -h <hostname> -u <username> -p, I get the following error: ERROR 1045 (28000): Access denied for user '<username>'@'<local_machine_hostname>' (using password: YES) The problem is that it keeps appending the current machine's hostname into the username. Obviously, that user@<local_machine_hostname> is not correct. It doesn't matter what I type. For instance, if I type: mysql -h <hostname> -u '<username>'@'<hostname>' -p It does the same, only in the error output, it says: Access denied for user '<username>@<hostname>'@'<local_machine_hostname>' Is there a setting in a configuration file which is allowing this to happen? It's really quite annoying. I need to set up a tikiwiki server, and it cannot connect because during the step where you set up mysql, it keeps appending the local machine's hostname to the mysql login name.

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